如何在kivy应用中使用windows默认文件浏览器

from kivy.uix.filechooser import FileChooser

file_chooser = FileChooser()

file_chooser.path = 'C:\\'  # 设置初始路径
file_chooser.filters = ['*.*']  # 设置文件过滤器
file_chooser.multiselect = False  # 设置是否允许多选

from kivy.uix.boxlayout import BoxLayout

class MyBoxLayout(BoxLayout):
    def __init__(self, **kwargs):
        super(MyBoxLayout, self).__init__(**kwargs)
        self.add_widget(file_chooser)

from kivy.app import App

class MyApp(App):
    def on_file_select(self, selection):
        # 处理文件选择事件
        print('Selected:', selection)

    def build(self):
        file_chooser.bind(on_selection=self.on_file_select)
        return MyBoxLayout()

if __name__ == '__main__':
    MyApp().run()